1. The first day of each month in the ancient Roman calendar

Encyclopedia: Calends

• genus Digitalis
• genus Digitaria
• genus Dillenia
• genus Dimetrodon
• genus Dimocarpus
• genus Dimorphotheca
• genus Dinornis
• genus Diodon
• genus Diomedea
• genus Dionaea
• genus Dioon
• genus Dioscorea
• genus Diospyros
• genus Diphylla
• genus Dipladenia
• genus Diplococcus
• genus Diplodocus
• genus Diplopterygium
• genus Diplotaxis
• genus Dipodomys
• genus Dipogon
• genus Dipsacus
• genus Dipsosaurus
• genus Dipteronia
• genus Dipteryx